Greenfield (NEW UNDERWOOD - RAPID CITY DC )

Greenfield

Pennington County, South Dakota · SPP

DC Readiness
67.0
Good / 100

Greenfield (NEW UNDERWOOD - RAPID CITY DC ) is a greenfield datacenter candidate site in Pennington County, South Dakota, interconnecting through SPP. It screens at 67.0/100 DC Readiness with a catalogued 300 MW of candidate capacity and a 1.0 yrs average interconnection-queue wait.

Power & interconnection

Nearest substationNEW UNDERWOOD
Substation voltage230 kV
Available capacity300 MW
LMP zoneSPP_NORTH
Wholesale LMP$21.13/MWh
Utility commercial rate0.14¢/kWh

Speed to power

ISO / RTO regionSPP
Queue depth17
Avg queue wait1.0 yrs
Recent queue wait0.6 yrs
Completion rate22%
Withdrawal rate78%

Connectivity

Nearest IXPGolden West Rapid City Skyline Facility
IXP distance15.0 mi
Fiber providers7
Fiber coverage16.8%
Nearest cloud providerGCP
Nearest cloud regionus-central1
Cloud region distance408.4 mi

Site characteristics

Site typeGreenfield
Parcel ownerWAPA-- WESTERN AREA POWER ADMINISTRATION
Land owner typeprivate
Buildability80.0/100
Land cover (NLCD)Grassland/Herbaceous

Risk & environment

Flood zoneZone X
Water stress (WRI)1.20
Wetlands (NWI)Clear
Critical habitatClear
Superfund nearbyClear
Hazard sub-score78/100
Construction cost index81.3 (avg 100)

Location context

Nearest datacenterGolden West Rapid City Skyline Facility
DC distance15.0 mi
Nearest rail4.4 mi
Nearest gas pipeline7.5 mi
Nearest fiber route121.3 mi
County hazard (FEMA NRI)Relatively Low (22)
DC tax incentiveYes (no_income_tax)
Commercial electricity13.55¢/kWh
Industrial electricity13.16¢/kWh
Cooling degree days700
Heating degree days7,300
Land price / acre$1,513
See all datacenter sites in Pennington County →

Incentive detail: No state corporate income tax; no personal income tax; no personal property tax.

Full DC Readiness breakdown

All 13 weighted sub-scores (0–100) behind the composite DC Readiness score.

Power availability20%
50
Speed to power15%
53
Fiber connectivity12%
64
Energy cost10%
88
Water risk8%
78
Natural hazard8%
78
Buildability7%
80
Labor market4%
50
DC cluster4%
80
Land / acreage3%
53
Construction cost3%
82
Gas pipeline2%
76
Tax incentive2%
100
Climate / cooling2%
90

Nearby comparable sites

Other scored datacenter candidate sites in Pennington County, ranked by DC Readiness.

Sites near Greenfield (NEW UNDERWOOD - RAPID CITY DC )
SiteTypeVoltageCapacityQueue waitScore
LANGESubstation-Adjacent230 kV300 MW1.0 yrs75.8
RAPID CITY DC TIESubstation-Adjacent230 kV300 MW1.0 yrs71.9
SOUTH RAPID CITYSubstation-Adjacent230 kV300 MW1.0 yrs70.8
UNKNOWN131182Substation-Adjacent115 kV100 MW1.0 yrs70.4
NEW UNDERWOODSubstation-Adjacent230 kV300 MW1.0 yrs69.9
UNKNOWN131179Substation-Adjacent115 kV100 MW1.0 yrs69.5
EC Near Ben FrenchGreenfield——1.0 yrs68.2
UNKNOWN131172Substation-Adjacent115 kV100 MW1.0 yrs67.7

Dataset updated . Screening estimates derived from public data sources.

Figures are screening estimates derived from public infrastructure data. Catalogued capacity reflects theoretical candidate capacity, not deliverable or committed interconnection. Confirm all values with the utility, ISO, and on-the-ground due diligence.

Go deeper than the public screen

This page shows a public slice of the GridCensus dataset for Greenfield (NEW UNDERWOOD - RAPID CITY DC ), Pennington County. Pro and Enterprise plans unlock the full 164,098-site catalog, raw sub-scores, parcel ownership, interconnection-queue detail, saved searches, and programmatic API access.

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